市场营销环境是指与企业营销活动有潜在关系的所有外部力量和相关因素的（），它是影响企业生存和发展的各种外部条件
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To succeed in a scientific research project ________.
A. one needs to be persistent
B. persistence is needed
C. one needs be a persistent person
D. one needs be a persistent person
The more we looked at the picture, ________.
A. the less we liked it
B. we like it less
C. better we liked it
D. it looked better
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